Carburetors & Parts


Fits:
Porsche 911 T 1969-70 WEBER Carbs
Porsche 911 T 1971-73 ZENITH Carbs
Porsche 914/6 1970–1972
Click 'Zoom in' for large parts diagram.
Diagram ref no 10
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110813100
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 914 (1970-1976)
Sold as set 6 for 1 car
Fits:
Porsche 911 2.0ltr - 1965 to 1968
Diagram ref no 16
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110891000
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)

Fits:
Porsche 911 1965-89
Product Specifications:
Part Number: E-3671
Product Style: Oval Air Filter
Air Filter Shape: Oval
Height: 3.25 in (83 mm)
Inner Wire: No
Inside Length: 10.75 in (273 mm)
Inside Width: 4 in (102 mm)
Outside Length: 12 in (305 mm)
Outside Width: 5.25 in (133 mm)
Top Style: Open
Top Material/Finish: None
Filter Material: Cotton Gauze
K&N® washable, reusable High-Flow Air Filters™ feature a state-of-the-art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower.
Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K&N's 10-Year/Million Mile Limited Warranty.
K&N drop-in replacement filters are designed to install easily into your factory air box.
Works with Original Equipment Manufacturer Vehicle Electronics.
Environmentally Friendly, K&N Reusable Air Filters
Upgrade today and start enjoying superior airflow and superior performance from K&N's most popular product!
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
E-3671
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50

This Product Fits:
Porsche 911 with carbs
K&N brand air filter, part number 56-1240 which is now 56-1770-1 this is for Weber 40/46 IDA (Triple carb) as fitted to Porsche 911.
K&N Custom Air Filter kits are designed to allow the maximum performance from your carburettors, yet keep the dirt on the outside where it belongs. These assemblies come with top and base plates and the famous K&N High-Flow Washable Air Filter.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
56-1770-2
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
The holder that seats the main jet inside the Solex 40 PII-4 carburetor. It establishes the jet’s position and fuel pick-up height in the emulsion well, ensuring stable mixture delivery from mid-range through high rpm. Manufactured to OE dimensions and thread form, it seals correctly in the carb body and maintains accurate fuel metering with your chosen jet size.
Sold each, 2 required per vehicle.
Fits:
Porsche 356 / 356A CARRERA 1500 GS/GT (M 90 501 >> 91 000) 1950 - 1959
Porsche 356B / 356C (Model: 1600 S90/SC, CARRERA, 587/1 692/3A) 1960-1965
Porsche 912 1.6L 1965 - 1969 (Engine code: 616/36/37)
Porsche 912 1.6L 1965 - 1969 (Engine code: 616/39/40)
Diagram ref no 21
• Use cases: Ideal during carb rebuilds, restoring stuck/damaged carriers, or standardizing mismatched carb internals to factory spec.
• Function: Positions and seals the main jet; maintains correct emulsion well height and fuel flow path
• Installation: Fit with correct main jet size; ensure seat is clean, threads lightly oiled, and torque gently to avoid damaging the carb body
Over time, the main jet carrier can suffer from thread wear, corrosion, or deformation caused by repeated jet changes and fuel exposure. A damaged or loose carrier may cause fuel leakage, poor jet seating, or inconsistent mixture flow. Replace it whenever threads are stripped, the hex is rounded, or corrosion is visible. It’s also recommended during any carburetor rebuild or tuning service to ensure accurate fuel metering and stable performance in your Porsche 356 or 912.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
61610091401
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Sold each - 1 required per carburettor
Fits:
Porsche 911 - 1965 to 1968
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110893903
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
PORSCHE 356/912 2 x Weber 40IDF
rep Solex
Top quality British made WEBCON inlet manifold and fittings.
Manifold set to allow replacement of original Solex carburettors with 2 x Weber 40IDF carburettors.
To replace Zenith carburettors, please see MW4051.
The following additional parts will also be required:
2 x AFB 320 air filter
1 x 9900531400 lever
1 x 9900531500 lever
1 x 5555503800 washer
2 x 4043179900 throttle stop
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65

Manifold set to allow replacement of original Zenith carburettors with 2 x Weber 40IDF carburettors.
To replace Solex carburettors, please see MW4050.
The following additional parts will also be required:
2 x AFB 320 air filter
1 x 9900531400 lever
1 x 9900531500 lever
1 x 5555503800 washer
2 x 4043179900 throttle stop
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65

This factory-supplied mixing tube slots inside the Solex 40 PII/44 PII carburettors fitted to Porsche 356 and 912. The tube (“Nr. 25” in Porsche diagrams) maintains the calibrated internal bore and jet path which controls metered fuel/air flow into the carburettor throat.
Sold each, 2 required per vehicle.
Fits:
Porsche 356 / 356A 1959 - 1959 with Engine code: 6922
Porsche 356B / 356C (Model: 1600 S90/SC, CARRERA, 587/1 692/3A) 1960-1965
Porsche 912 1.6L 1965 - 1969 (Engine code: 616/36/37)
Porsche 912 1.6L 1965 - 1969 (Engine code: 616/39/40)
Diagram ref no 37
Manufactured to exact Porsche specifications with precision bore, correct fit and finish, this OEM part ensures correct mixture delivery, consistent idle behaviour and restores original equipment performance in your classic Porsche fuel system.
• Part Number: 61610090703 (replaces 61610090702)
• Function: Controls metered fuel/air flow inside carburettor body
• Position: Inside carburettor body, part “tube Nr. 25”
Over time, the factory mixing tube may suffer wear, corrosion or internal bore distortion. Even slight degradations can upset fuel/air mixture, causing rough idle, hesitation or poor drivability.
Replace this part when:
• You are performing a full carburettor rebuild or fuel-system service
• The original is worn, corroded or missing
• The engine shows symptoms of mixture imbalance or idle instability
• You aim to restore the vehicle to factory specification and optimal performance
Installing the genuine Porsche restores original induction geometry, precise mixture control and ensures your classic Porsche runs the way Porsche intended.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
61610090703
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
The carburetor mixing tube (often marked "pipe - no. 25" on diagrams) is used in classic Porsche 356/912 models equipped with Solex carburetors. This tube routes metered fuel or air within the carburettor body and ensures correct mixture distribution, consistent flow and reliable performance. It is manufactured to replicate the original shape, diameter, and material specifications, allowing for direct replacement without the need for modification.
Sold each, 2 required per vehicle.
Fits:
Porsche 356 / 356A 1959 - 1959 with Engine code: 6922
Porsche 356B / 356C (Model: 1600 S90/SC, CARRERA, 587/1 692/3A) 1960-1965
Porsche 912 1.6L 1965 - 1969 (Engine code: 616/36/37)
Porsche 912 1.6L 1965 - 1969 (Engine code: 616/39/40)
Diagram ref no 37
• Part Number: 61610090703 (replaces 61610090702)
• Function: Routes metered fuel/air within the carburettor body; ensures correct mixture delivery
• Position: Engine induction system – inside carburettor body / fuel pipe assembly
• Benefits: OE-geometry bore, direct fit, restores correct fuel flow path, upgrade over superseded part
Over time, the carburetor mixing tube experiences continuous exposure to fuel vapors, vibration, and temperature cycling. These conditions can gradually cause wear, corrosion, or slight deformation of the internal passage, leading to poor fuel atomization and inconsistent mixture delivery between cylinders. Even small changes in the tube’s inner diameter or alignment can affect throttle response and idle smoothness.
Replace this tube when:
• Performing a carburetor rebuild or restoration of a Porsche 356, 912, or early 911
• The existing tube is corroded, blocked, cracked, or showing pitting inside the bore
• You observe uneven fuel mixture, hesitation, or rough idling during engine operation
• Upgrading or replacing other induction components (jets, floats, shafts) to restore OEM precision.
Replacing the worn tube with a new ensures consistent fuel metering, proper mixture balance, and reliable carburetor performance — critical for maintaining smooth drivability and authentic response in classic Porsche engines.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
61610090703
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Sold as a set of 12 for 1 car
Fits:
Porsche 911 2.0ltr - 1965 to 1968
Diagram ref no 17
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110823500
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)

Fits:
Porsche 356 1.5L 1600 S 1950-59 with SOLEX 40 PBIC with chassis M >> 81 200
Porsche 356 A / B Carrera GS 1.6L 1959 with SOLEX 40 P II-4/WEBER
Porsche 911 >> 1968 with SOLEX 40 PI-1
Diagram ref no 80
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
61610090501
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
Fits:
Porsche 356 1.5L 1600 S 1950-59 with SOLEX 40 PBIC with chassis M >> 81 200
Porsche 356 A / B Carrera GS 1.6L 1959 with SOLEX 40 P II-4/WEBER
Porsche 911 >> 1968 with SOLEX 40 PI-1
Diagram ref no 80
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
61610090501
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
Sold each - 2 required per carburettor
Fits:
Porsche 911 - 1965 to 1968
Diagram ref no 38
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110894400
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)

Performance kit to allow fitment of 2 x Genuine Spanish Weber 34 ICT carburettors to the VW T2 1.7 / 1.8 / 2.0 Van, and the Porsche 914/4.
Kit consists of
2 x Weber 34 ICT carburettors
1 x Intake Manifold set
1 x Webcon linkage set, studs, nuts, washers, air filters, Weber tuning manual etc
Please see cross selling products for details of Low Pressure fuel pump
Kit is supplied with the following jet spec
NEEDLE VALVE 175
AIR CORR 160
E TUBE F78
MAIN JET 140
IDLE JET 60
PUMP JET 50
BLEED VALVE 40
AUX VENT 4.5
CHOKE 29
FLOAT HEIGHT 8mm
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PVW207
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 914 (1970-1976)

Fits
Porsche 911 - Air cooled engine with Weber Carburettors
Kit Includes
Please see the PMO vs OE Carb Overview
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
Precision Carburetors & Components – Heritage
Performance and Reliability for Porsche Classics
Carburetors remain the beating heart of many classic
Porsche engines, delivering the perfect air-fuel mixture for smooth,
responsive combustion. At Design911, we offer a comprehensive range of high-quality
carburetors and replacement components designed to maintain or enhance the
authentic driving experience of vintage and air-cooled Porsche models.
From complete carburetor assemblies to jets, diaphragms, gaskets, floats, and linkages, our products are engineered to precise manufacturer standards, ensuring consistent performance, easy tuning, and reliable fuel delivery — whether for restoration or motorsport use.
What Do Carburetors and Carburetor Parts Do?
A carburetor’s role is to blend fuel and air in the correct ratio before it enters the engine. This process ensures efficient combustion, smooth throttle response, and optimal power output.
Core Functions:
- Regulate
air-fuel mixture for various engine speeds and loads.
- Deliver
consistent fuel flow for smooth idling and acceleration.
- Maintain
throttle response across changing temperatures and altitudes.
- Support efficient combustion and improved drivability in heritage engines.
Modern performance replacements and rebuild kits allow older Porsche models to retain their period-correct feel while achieving modern levels of reliability.
Why Do Carburetors Fail?
Over time, carburetors and their internal components degrade
due to fuel varnish, dirt contamination, and mechanical wear. Common
failure symptoms include:
- Hard
starting or stalling due to clogged jets or passages.
- Uneven
idling or misfiring from air leaks or worn gaskets.
- Poor
acceleration or fuel economy caused by sticking floats or needle
valves.
- Fuel leaks or drips from perished seals or warped housings.
Regular inspection and replacement of worn parts prevent poor performance, fuel inefficiency, and potential engine damage.
Why Replace with Precision-Engineered Carburetor Components?
Replacing worn components with precision-engineered carburetor parts ensures your Porsche’s engine maintains its legendary throttle feel and power delivery.
Key Benefits:
- Restores
consistent air-fuel mixing and smooth engine operation.
- Improves cold starting and throttle response.
- Eliminates
leaks and uneven idle, improving drivability.
- Extends
engine life through correct fueling and reduced detonation risk.
- Maintains
heritage authenticity with manufacturer-quality materials and
machining.
- Perfect compatibility with period-correct Porsche carburetor systems (e.g., Weber, Solex, Zenith).
Whether you’re rebuilding a classic 911, 914, or 356, our selection of carburetors and components delivers modern precision with period-correct performance.
Highlights:
- Complete
range of carburetors and rebuild components for Porsche classics.
- Precision-machined
parts ensure reliable fuel delivery and response.
- Manufacturer-quality
fitment for seamless installation.
- Improved
combustion efficiency and performance consistency.
- Compatible with Weber, Solex, and Zenith systems.
- Ideal for engine restorations, rebuilds, and tuning projects.